fourzerotwo
← Time Zones & Business Days
tools by fourzerotwo

Time zone facts

Offset, abbreviation and DST at a moment, plus the next clock change, for an IANA zone.

Time zone facts Free

Offset, abbreviation and DST at a moment, plus the next clock change, for an IANA zone.

cost
Free then $0.001 / call
MCP tool
time__zone-info
method
GET

Free up to 50 calls a day over MCP (500 with a free key), then $0.001 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/time/zone-info

ParamTypeDescription
zone string IANA zone
at? string Date/time to evaluate (default now)
# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/time/zone-info?zone=Australia%2FSydney"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/time/zone-info?zone=Australia%2FSydney"

by fourzerotwo

Report this endpoint

Use it from an AI agent (MCP)

Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.

{
  "mcpServers": {
    "fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
  }
}
# the call the agent makes
call_api {"tool": "time__zone-info", "arguments": {"zone":"Australia/Sydney","at":"2026-12-01"}}

More from Time Zones & Business Days

  • Business days (any country) — Count business days between two dates, or add business days to a date, skipping weekends and the country's pub...
  • Convert a local time between zones — Convert a wall-clock time from one IANA zone to another; says when it is ambiguous (clocks go back) or never h...
  • Current time in a zone — Local time, UTC, offset, abbreviation, DST flag, weekday and ISO week for a zone.
  • Paid test call — Server UTC time and a request id. The cheapest paid endpoint: use it to test an x402 payment end to end.

IANA Time Zone Database (public domain); holiday rules via Yasumi (MIT).